Initial import

1 files changed, 303 insertions, 0 deletions

diff --git a/openssl/crypto/rand/rand_egd.c b/openssl/crypto/rand/rand_egd.c
new file mode 100644
index 00000000..d53b916e
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+++ b/openssl/crypto/rand/rand_egd.c
@@ -0,0 +1,303 @@
+/* crypto/rand/rand_egd.c */
+/* Written by Ulf Moeller and Lutz Jaenicke for the OpenSSL project. */
+/* ====================================================================
+ * Copyright (c) 1998-2000 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <openssl/e_os2.h>
+#include <openssl/rand.h>
+#include <openssl/buffer.h>
+
+/*
+ * Query the EGD <URL: http://www.lothar.com/tech/crypto/>.
+ *
+ * This module supplies three routines:
+ *
+ * RAND_query_egd_bytes(path, buf, bytes)
+ *   will actually query "bytes" bytes of entropy form the egd-socket located
+ *   at path and will write them to buf (if supplied) or will directly feed
+ *   it to RAND_seed() if buf==NULL.
+ *   The number of bytes is not limited by the maximum chunk size of EGD,
+ *   which is 255 bytes. If more than 255 bytes are wanted, several chunks
+ *   of entropy bytes are requested. The connection is left open until the
+ *   query is competed.
+ *   RAND_query_egd_bytes() returns with
+ *     -1  if an error occured during connection or communication.
+ *     num the number of bytes read from the EGD socket. This number is either
+ *         the number of bytes requested or smaller, if the EGD pool is
+ *         drained and the daemon signals that the pool is empty.
+ *   This routine does not touch any RAND_status(). This is necessary, since
+ *   PRNG functions may call it during initialization.
+ *
+ * RAND_egd_bytes(path, bytes) will query "bytes" bytes and have them
+ *   used to seed the PRNG.
+ *   RAND_egd_bytes() is a wrapper for RAND_query_egd_bytes() with buf=NULL.
+ *   Unlike RAND_query_egd_bytes(), RAND_status() is used to test the
+ *   seed status so that the return value can reflect the seed state:
+ *     -1  if an error occured during connection or communication _or_
+ *         if the PRNG has still not received the required seeding.
+ *     num the number of bytes read from the EGD socket. This number is either
+ *         the number of bytes requested or smaller, if the EGD pool is
+ *         drained and the daemon signals that the pool is empty.
+ *
+ * RAND_egd(path) will query 255 bytes and use the bytes retreived to seed
+ *   the PRNG.
+ *   RAND_egd() is a wrapper for RAND_egd_bytes() with numbytes=255.
+ */
+
+#if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_VOS) || defined(OPENSSL_SYS_BEOS)
+int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes)
+	{
+	return(-1);
+	}
+int RAND_egd(const char *path)
+	{
+	return(-1);
+	}
+
+int RAND_egd_bytes(const char *path,int bytes)
+	{
+	return(-1);
+	}
+#else
+#include <openssl/opensslconf.h>
+#include OPENSSL_UNISTD
+#include <sys/types.h>
+#include <sys/socket.h>
+#ifndef NO_SYS_UN_H
+# ifdef OPENSSL_SYS_VXWORKS
+#   include <streams/un.h>
+# else
+#   include <sys/un.h>
+# endif
+#else
+struct	sockaddr_un {
+	short	sun_family;		/* AF_UNIX */
+	char	sun_path[108];		/* path name (gag) */
+};
+#endif /* NO_SYS_UN_H */
+#include <string.h>
+#include <errno.h>
+
+#ifndef offsetof
+#  define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes)
+	{
+	int ret = 0;
+	struct sockaddr_un addr;
+	int len, num, numbytes;
+	int fd = -1;
+	int success;
+	unsigned char egdbuf[2], tempbuf[255], *retrievebuf;
+
+	memset(&addr, 0, sizeof(addr));
+	addr.sun_family = AF_UNIX;
+	if (strlen(path) >= sizeof(addr.sun_path))
+		return (-1);
+	BUF_strlcpy(addr.sun_path,path,sizeof addr.sun_path);
+	len = offsetof(struct sockaddr_un, sun_path) + strlen(path);
+	fd = socket(AF_UNIX, SOCK_STREAM, 0);
+	if (fd == -1) return (-1);
+	success = 0;
+	while (!success)
+	    {
+	    if (connect(fd, (struct sockaddr *)&addr, len) == 0)
+	       success = 1;
+	    else
+		{
+		switch (errno)
+		    {
+#ifdef EINTR
+		    case EINTR:
+#endif
+#ifdef EAGAIN
+		    case EAGAIN:
+#endif
+#ifdef EINPROGRESS
+		    case EINPROGRESS:
+#endif
+#ifdef EALREADY
+		    case EALREADY:
+#endif
+			/* No error, try again */
+			break;
+#ifdef EISCONN
+		    case EISCONN:
+			success = 1;
+			break;
+#endif
+		    default:
+			goto err;	/* failure */
+		    }
+		}
+	    }
+
+	while(bytes > 0)
+	    {
+	    egdbuf[0] = 1;
+	    egdbuf[1] = bytes < 255 ? bytes : 255;
+	    numbytes = 0;
+	    while (numbytes != 2)
+		{
+	        num = write(fd, egdbuf + numbytes, 2 - numbytes);
+	        if (num >= 0)
+		    numbytes += num;
+	    	else
+		    {
+		    switch (errno)
+		    	{
+#ifdef EINTR
+		    	case EINTR:
+#endif
+#ifdef EAGAIN
+		    	case EAGAIN:
+#endif
+			    /* No error, try again */
+			    break;
+		    	default:
+			    ret = -1;
+			    goto err;	/* failure */
+			}
+		    }
+		}
+	    numbytes = 0;
+	    while (numbytes != 1)
+		{
+	        num = read(fd, egdbuf, 1);
+	        if (num == 0)
+			goto err;	/* descriptor closed */
+		else if (num > 0)
+		    numbytes += num;
+	    	else
+		    {
+		    switch (errno)
+		    	{
+#ifdef EINTR
+		    	case EINTR:
+#endif
+#ifdef EAGAIN
+		    	case EAGAIN:
+#endif
+			    /* No error, try again */
+			    break;
+		    	default:
+			    ret = -1;
+			    goto err;	/* failure */
+			}
+		    }
+		}
+	    if(egdbuf[0] == 0)
+		goto err;
+	    if (buf)
+		retrievebuf = buf + ret;
+	    else
+		retrievebuf = tempbuf;
+	    numbytes = 0;
+	    while (numbytes != egdbuf[0])
+		{
+	        num = read(fd, retrievebuf + numbytes, egdbuf[0] - numbytes);
+		if (num == 0)
+			goto err;	/* descriptor closed */
+	        else if (num > 0)
+		    numbytes += num;
+	    	else
+		    {
+		    switch (errno)
+		    	{
+#ifdef EINTR
+		    	case EINTR:
+#endif
+#ifdef EAGAIN
+		    	case EAGAIN:
+#endif
+			    /* No error, try again */
+			    break;
+		    	default:
+			    ret = -1;
+			    goto err;	/* failure */
+			}
+		    }
+		}
+	    ret += egdbuf[0];
+	    bytes -= egdbuf[0];
+	    if (!buf)
+		RAND_seed(tempbuf, egdbuf[0]);
+	    }
+ err:
+	if (fd != -1) close(fd);
+	return(ret);
+	}
+
+
+int RAND_egd_bytes(const char *path, int bytes)
+	{
+	int num, ret = 0;
+
+	num = RAND_query_egd_bytes(path, NULL, bytes);
+	if (num < 1) goto err;
+	if (RAND_status() == 1)
+	    ret = num;
+ err:
+	return(ret);
+	}
+
+
+int RAND_egd(const char *path)
+	{
+	return (RAND_egd_bytes(path, 255));
+	}
+
+
+#endif